-
Notifications
You must be signed in to change notification settings - Fork 35
/
utils.go
44 lines (39 loc) · 839 Bytes
/
utils.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
package proxy
import (
"net"
"net/http"
"net/url"
"time"
)
func checkConnection(upstream string, timeout time.Duration) (time.Duration, error) {
zero := time.Millisecond * 0
endpoint, err := url.Parse(upstream)
if err != nil {
return zero, err
}
switch endpoint.Scheme {
case "tcp":
c, err := net.DialTimeout("tcp", endpoint.Host, timeout)
if err != nil {
return zero, err
}
defer c.Close()
start := time.Now()
if _, err := c.Read([]byte{}); err != nil {
return zero, err
}
latency := time.Now().Sub(start)
return latency, nil
case "http", "https":
c := &http.Client{
Timeout: timeout,
}
start := time.Now()
if _, err := c.Get(endpoint.Scheme + "://" + endpoint.Host); err != nil {
return zero, err
}
latency := time.Now().Sub(start)
return latency, nil
}
return zero, nil
}